/*
 * Copyright 2021 the original author or authors.
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * https://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.openrewrite.java.search;

import org.openrewrite.ExecutionContext;
import org.openrewrite.Recipe;
import org.openrewrite.java.JavaIsoVisitor;
import org.openrewrite.java.JavaVisitor;
import org.openrewrite.java.tree.J;
import org.openrewrite.java.tree.JavaType;

public class FindMissingTypes extends Recipe {

    @Override
    public String getDisplayName() {
        return "Find missing type information on Java ASTs";
    }

    @Override
    public String getDescription() {
        return "This is a diagnostic recipe to highlight where ASTs are missing type attribution information.";
    }

    @Override
    public JavaVisitor<ExecutionContext> getVisitor() {
        return new JavaIsoVisitor<ExecutionContext>() {
            @Override
            public J.MethodInvocation visitMethodInvocation(J.MethodInvocation method, ExecutionContext executionContext) {
                JavaType.Method type = method.getMethodType();

                if (type == null) {
                    return method.withMarkers(method.getMarkers().searchResult("type is 'null'"));
                } else if (!type.getName().equals(method.getSimpleName())) {
                    return method.withMarkers(method.getMarkers().searchResult("type information has a different method name '" + type.getName() + "'"));
                }

                return super.visitMethodInvocation(method, executionContext);
            }
        };
    }
}
